THE FIRST INFRARED STUDY OF THE CLOSE ENVIRONMENT OF A LONG GAMMA-RAY BURST*

@article{Floch2012THEFI,
  title={THE FIRST INFRARED STUDY OF THE CLOSE ENVIRONMENT OF A LONG GAMMA-RAY BURST*},
  author={Emeric Le Floc’h and V.Charmandaris and K.Gordon and W.J.Forrest and B.Brandl and D.Schaerer and M.Dessauges-Zavadsky L.Armus Ceaaim and France. and University of Crete and Greece. and Observatoire de Paris and Iesl and Stsci and Baltimore. and Usa and University of Rochester and Leiden Obs. and Netherlands and Geneva Obs. and Switzerland. and Cnrsirap and Spitzer Science Center and Pasadena},
  journal={The Astrophysical Journal},
  year={2012},
  volume={746},
  pages={7}
}
We present a characterization of the close environment of GRB 980425 based on 5-160 μm spectro-imaging obtained with Spitzer. The gamma-ray burst GRB 980425 occurred in a nearby (z = 0.0085) SBc-type dwarf galaxy at a projected distance of 900 pc from an H II region with strong signatures of Wolf-Rayet (WR) stars. While this "WR region" produces less than 5% of the B-band emission of the host, we find that it is responsible for 45% ± 10% of the total infrared luminosity, with a maximum… Expand
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